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31. 发明专利

JPH02226207A OPTICAL CONNECTOR 失效
公开(公告)号：JPH02226207A
公开(公告)日：1990-09-07
申请号：JP4715889
申请日：1989-02-28
申请人： FURUKAWA ELECTRIC CO LTD
发明人： MAEKAWA HIROAKI , SHIMIZU MASANOBU , MORIYA YOSHIAKI , HIMONO YUUSAKU
IPC分类号： G02B6/36
摘要： PURPOSE:To allow a tension member to achieve sufficient tensile force by bundling the tip of the tension member which is near a ferrule attached to the tip of an optical cable and fixing a bundling part to a pressing member. CONSTITUTION:The optical cable 11 is constituted of the fibrous tension member 14 arranged on the outer periphery of a primary sheath 13 covering the outer peripheral surface of a coated optical fiber 12 and a secondary sheath 15 covering the member 14. The sheath 15 on the tip part 11a of the cable 11 is removed and inserted and fixed in the ferrule 17. The ferrule 17 is housed in a connector housing 18 and fixed by a ferrule presser 19. The member 14 near the ferrule 17 is bundled and fixed by the presser 19. With such a constitution, the tensile force is transmitted to the tension member when the optical cable is pulled against the connector housing. The tensile force is transmitted to the ferrule presser through the tension member and is prevented from being impressed on an optical fiber.

32. 发明专利

JPS63118677A DETECTION OF MAGNETIC FIELD BY OPTICAL FIBER MAGNETIC FIELD SENSOR 失效
公开(公告)号：JPS63118677A
公开(公告)日：1988-05-23
申请号：JP26473886
申请日：1986-11-06
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SHIMIZU MASANOBU , MIYAKE RYOHEI
IPC分类号： G01R33/032
摘要： PURPOSE:To improve the variance of Verdet's constant due to temperature by making two light beams different in wavelength incident on an optical fiber magnetic field sensor and detecting the Faraday rotation angle for each wavelength. CONSTITUTION:Light beams from a light source 1 which emits light having a wavelength lambda1 and a light source 2 emits light having a wavelength lambda2 are made incident on an optical fiber 4 through a multiplexer 3. They are converted to parallel rays of light by a rod lens 5 and are turned by a rectangular prism 6 and are made incident on a polarizing prism 7. The incident light is converted to linear light and is made incident on a Faraday rotating element 8. The exit light is divided into (x) and (y) components by a polarizing beam splitter prism 9. Light of the (y) component is made incident on an optical fiber 11 by a rod lens 10 and is inputted to a demultiplexer 12. This light is divided to light beams having wavelengths lambda1 and lambda2 again by the demultiplexer 12, and they are made incident on detectors 13 and 14. Light of the (x) component is turned by a rectangular prism 15 and is converted to parallel rays of light by a rod lens 16 and is made incident on an optical fiber 17 and is inputted to a demultiplexer 18. This light is divided into light beams having wavelengths lambda1 and lambda2 again by the demultiplexer 18, and they are made incident on detectors 19 and 20.

33. 发明专利

JPS58120214A CONNECTING METHOD OF SINGLE POLARIZATION OPTICAL FIBER 失效
公开(公告)号：JPS58120214A
公开(公告)日：1983-07-18
申请号：JP261282
申请日：1982-01-11
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SHIMIZU MASANOBU , TAKABAYASHI TSUNEHISA
IPC分类号： G02B6/24 , G02B6/38
摘要： PURPOSE:To obtain an optimum connection state, by measuring quntities of leakage from single polarization optical fibers. CONSTITUTION:In case that a pair of single polarization optical fibers 1a and 1b are connected, their connection faces are matched to each other, and a light 4 from a light source 3 is made incident to the incidence end of the optical fiber 1a through a polarizer 2 while rotating the optical fiber 1a or 1b. This incident light is emitted from the exit end of the optical fiber 1a and is made incident to the incidence end of the optical fiber 1b. If the axis of polarization of the light incident to the optical fiber 1b coincides with that of the optical fiber 1b, this light is incident to the core of the optical fiber 1b and is not leaked to the external; but if the axis of polarization of this incident light does not coincide with that of the optical fiber, the incident light is scattered or leaked to the outside of the optical fiber 1b. Consequently, the quantity of light leaked from the optical fiber 1b is measured to discriminate the coincidence or incoincidence of the axis of polarization. Thus, optical fibers are connected after confirming the coincidence of the axis of polarizalion to obtain an opitmum connection state.

34. 发明专利

JPS54122641A SOFT SOLDER JOINING APPARATUS FOR STRIP 失效
公开(公告)号：JPS54122641A
公开(公告)日：1979-09-22
申请号：JP3023278
申请日：1978-03-16
申请人： FURUKAWA ELECTRIC CO LTD , FURUKAWA METALS CO
发明人： INOUE ITARU , SHIMIZU MASANOBU
IPC分类号： C23C2/38 , B23K35/40 , C23C2/40
摘要： PURPOSE:To enable a strip to be uniformly coated with soft solder without bending the strip by passing the strip through slits cut in both sides of a small-sized soft solder coating vessel on a soft solder-filled vessel and contacting the stip to molten soft solder circulating through the vessels. CONSTITUTION:The upper part of vessel 1 filled with molten soft solder 2 is provided with soft solder coating vessel 9 smaller than vessel 1 is in size while dipping the bottom of vessel 9 in solder 2. Solder 2 in vessel 1 is circulated from pipe 11 to the upper part of vessel 9 through pump 10. On the other hand, strip 4, esp. large-sized superconductive wire is passed through slits 8, 8 of vessel 9 from supply drum 3. During this time, it is contacted to soft solder flowing down from pipe 11 and coated with the solder. Strip 4 leaving vessel 9 is cooled with water, etc. sprayed from coller 6 and coiled round drum 7.

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